Great question, great topic. By experience we see that positive thinking yields great rewards such as positive experiences, positive emotions, positive actions, etc. It gives way to good health. Thinking is central to life and determines much of it directly. God's Word/the Bible Says, "As a person thinks in their heart so are they," or literally in Hebrew it says "As a person opens the gate/thinks in their soul, so are they," Proverbs 23. "As water reflects the face, so the heart reflects the person," Proverbs 27. "Be Transformed by the Renewing of your mind," Romans 12. "The God of hope fill you with all joy and peace in believing," Romans 15. "According to your faith it will be done to you," Matthew 9. And there are many more words from God's Word on this. So, our thoughts are like the programming of a computer, it determines what the computer will have and do, and so it is with out lives. And further, we need to not just have positive thinking, but also truth thinking. Because we could think positive about something, but maybe that is not enough, as when we make a mistake that affects someone, we need to think positively but also go and reconcile the issue with them. Or, we could think positively that if we drive through a red light we will okay, but that is not true, at least not naturally, and so we must think positive in truth. This, being another application of God Jesus' words in John 4, where we must worship God in spirit and truth, where spirit can mean our human spirit and/or thoughts, and also truth/God's Word the Bible, and in 2Thessalonians 2 it says that we are transformed by spirit and truth together. I touch into these things in my hub "A.D.D." is not A.D.D., here is a link to it https://hubpages.com/health/ADD-is-not-ADD... Thank you again.